Filter-pump.



No. 629,387. Patented July 25, i899.

H. NDRDTMEYE-H.

FILTER PUIP.

(Application Med Feb. 24, 1899.)

(lo lodol.)

INVENTR 15W tf J uw WITNESS'ES:

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i' ISTATES PATENT OFFICE.

` device shown. The cap or cover h has a plural- To all whom it jin/cryConc-crit. f

HERMANN NORDTMEYER, OF r CELLE, GERMANY, ASSIGNOR TO AUGUST GIESE, OFNEW YORK, N. Y. Y

- FILTER-PUMP.`

SPECIFIATION formingfpartvof Letters Patent No. 629,387, dated. July 25,1899.

Application filed February 24, 1899. Serial No. 706,639. (No model.)

Be it known that LHERMANN NORDTMEYER, a subject of the King of Prussia,Emperor ot'l 'of soldiers in the field, travelers, enplorers",

and for other purposes.

My invention win be described with the aid of the accompanying drawings,forming part hereof, wherein I have illustrated a iilter- 'pumpembodying'my invention;

vIn the drawings, Figure l is an elevation of the filter. sectionthrough the filter-pump on line 2 2 of Fig. '3. Fig. 3 is a horizontalsection on line 3 3 of Fig. 2. verse sectional view of the lower part ofthe apparatus, showing the construction of the inlet-valve and the lowerpart of Lthe pumpchamber. let-valve of the pump-chamber.

7 is a detail face View of the filter-cylinder supporting and guidingdisk viewed fiatwise.

In the drawings, a represents the filter-barrel, provided at the bottomwithv 'a pumpchamber b. This pump-chamberb is bounded by the circularwall of the llter-barrel and by the apertured partitions cd, providedwith valves ef, hereinafter fully described. A filtercylinder g issuitably suspended within the lter-barrel a, preferably bythe suspendingity of rims or collars h' h2, the inner of which, h', is adapted` toenter the upper end of the filter-barrel a and the outer of which isadapted to rest upon a rubber packing-ringen', seat'- ed in the end ofthe filter-cylinder. rlhis cap or cover is slotted, as shown in Fig. Y1,and is held in place on the filter-barrel by screws d2, plvoted to thefilter-barrel, entering'the slots in the cap or cover h and providedwith wingnuts a8 for firmly seating the cap or cover hy on the barrel.The cap or cover h is` axially apertured for the passage of a hanger forthe an apertured disk or spider p. 'sideview in Fig. 2

Fig. 2 is a transverse vertical- Fig. 4 is an enlarged trans.

Fig. 5 is an elevation of the' 'out-` Fig. 6 isa` vertical centralsection ot' said valve', and Fig i l 'lter-cylinder g, comprising thepipe i, provided with the rimmed liange j, to which the 'filter-cylinderis secured'. The' pipe i is ex teriorly screw-threaded at its upper endand extends within the cylinder g, the-portion inside the cylinder beingprovided with apertures 7s for the'entry of water into the pipe. Thepipe i and its attachments are supported in the head h by a nut l, apacking-ring 'm in- 'tervening between the head hand the ange j. Anipple "n is screwed upon the upper end of the pipe 'i and carries anozzleo, moving loosely therein, which is the delivery-pipe for thefiltered `water. 4Secured Yooncentrically 'to the lower end ofthefilter-cylinder g is (Shown in and in plan in Fig. 7.) This diskperforms a two-fold useful function-vin., when the cylinder is in place,as

Ashown in Fig. 2, the disk steadies the cyl- Yground and will supportthe cylinder g clear of the ground. Located at the side of andsubstantially parallel to the barrel a is a pump comprising apump-barrel q, piston 7', con necting-pipe s,which pipe connects thepumpbarrel q with the pump-chamber @and a connection t ot' suitableforinvfor supplementing the pipe s in mechanically connecting the pumpto the lilter-barrel c. The partition d is secured to the filter-barrel@water-tight by a threaded ring u, screwed in the lower part of thebarrel, taking over a flange o on the partition. This partition islikewise provided with an internallyscrew-threaded annnlus w, into whichis screwed a threaded foot-piece at,

` provided with lateral passages y. Astrainer z is heldin place betweenthe foot-piece and ,partition. v'liie central aperture d' of thepartition d is provided with a suitable inlet-valve f, shown inthe'present instance as a ballvalve, comprising-the balldz, enveloped by`a retaining-cage da, screwed upon the nipple d4, formed on thepartition d. The central #aperture vof the partition c is provided witha IOO screw-threaded at e2 to fit the aperture in the partition and alsoscrew-threaded on the reduced portion e3 to receive the threadedballretaining cage e4, which prevents displacement of the ball e5. Theplug is provided with tool-en gagin g means-such, for instance, as theslot'e'G-Where'by a screw-driver or other tool may be applied thereto toseat the plug in the partition c or to remove it therefrom.

The operation of the device is as follows: The apparatusmay be set up ina pool of water or other source of Water-supply, the lateral passages inthe foot-piece permitting the inward flow of the water. Upon operatingthe pump, at the rise of the piston water will enter the pump-chamberand pump through the inlet-valve f. Upon the descent of the piston thevalve f will close and water will Apass by the outlet-valve e from thepumpchamber into the filter-barrel. The water will then .pass throughthe, walls of the filtercylinder g into the interior thereof, beingthereby `filtered, and will pass out of the apparatus by the pipe 't'and delivery-nozzle o.` The pump, in combination with the valvedVpump-chamber, acts alternately as a suctionpump to draw Water into thepump-chamber and pump and as a force-pump to expel the Water therefromand through the filter-cylinder, pipe t', and delivery-nozzle.

The advantages of this structure will be manifest. It will be readilyseen that it affords a means whereby a supply of pure wa- 'ter may bederived from a pool, stream, or other source of Water, any impurities orcontaminations of the water being filtered out bythe passage of thewater through the fil ter-cylinder g, which is preferably made ofkieselguhr, the fossil meal found in the mines of Hanover, in Germany.

The apparatus is usually made in portable form, about eighteen incheslong, so that it may be easily transported. When 'used in the militaryservice, to which use it is peculiarly adapted, one or two of thestructures may be carried in the general equipment of each company orbattery, the apparatus being so light that it may be included in `themess-gear of Ythe company-cooks Without inconvenience.

vWhat I claim, and desire to secure by Letters Patent, is-

l. In a transportable filter-pump, the combination of an uprightfilter-barrel provided with a Afiltering element and a delivery-pipe, apump-chamber at the lower end of the filter-barrel provided withautomatically-operating inlet and outlet valves andan upright pumpsecured at the side of the Vfilter-*barrel and communicating with the pump-chamber between the valves thereof, whereby the .pump operatesalternately as a suction and force pump to draw Water iuto thepump-chamber and to force it therefrom through the filtering element anddelivery-pipe.

2. In a filter-pump, the combination of a tubular ltering element, meansfor suspending the same in a filter-barrel by its upper end and anapertured disk or spider of substantially the same diameter as theinterior of the iilter-barrel secured to the filtering element, wherebywhen the filtering element is supported on its side the disk or spiderwill support it free from contact with the supportingsurface, and whenthe filtering element is in place in the apparatus the disk or spiderwill serve to prevent vibration of the free end of Athe filteringelement.

